Finding the Fourth Proportional to 56,018.52, 84,003.20 and 16,578.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56,018.52 : 84,003.20 = 16,578.72 : x
2. Step 2: Convert to fraction form
   56,018.52/84,003.20 = 16,578.72/x
3. Step 3: Cross multiply
   56,018.52x = 84,003.20 × 16,578.72
4. Step 4: Simplify right side
   56,018.52x = 1,392,665,531.90
5. Step 5: Solve for x
   x = 1,392,665,531.90/56,018.52
6. Step 6: Final answer
   x = 24,860.81